Effect of temperature on the action spectra of pristine and Cu-grafted titania |
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| Institution: | 1. Novosibirsk State Technical University, 630073 Novosibirsk, Russian Federation;2. G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation;3. Novosibirsk State University, 630090 Novosibirsk, Russian Federation |
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| Abstract: | The dependence of action spectra for pristine and Cu-grafted anatase TiO2 on temperature for photocatalytic acetone vapor oxidation at 40, 100 and 140 °C is described. The results obtained demonstrate the thermal inhibition of activity under UV irradiation for pristine titania at 140 °C, while for TiO2 grafted with copper species this inhibition is suppressed. Photonic efficiency of visible radiation energy utilization by Cu-grafted titania increases with temperature and exceeds the corresponding value for pure anatase in the investigated temperature range. |
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| Keywords: | copper grafting oxidation action spectra thermal activation |
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